/*!
    \file    i2c.h
    \brief   the header file of I2C

    \version 2024-01-05, V1.2.0, demo for GD32H7xx
*/

/*
    Copyright (c) 2024, GigaDevice Semiconductor Inc.

    Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    1. Redistributions of source code must retain the above copyright notice, this
       list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright notice,
       this list of conditions and the following disclaimer in the documentation
       and/or other materials provided with the distribution.
    3. Neither the name of the copyright holder nor the names of its contributors
       may be used to endorse or promote products derived from this software without
       specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/

#ifndef I2C_H
#define I2C_H

#include "systick.h"

#define I2C_TIME_OUT   			(uint32_t)(50000)
#define I2C_OK         			0
#define I2C_FAIL       			1
#define MAX_RELOAD_SIZE     255

#define I2C_SPEED           400000
#define I2C_PAGE_SIZE       64
#define I2CX                I2C3
#define RCU_GPIO_I2C_SDA    RCU_GPIOD
#define RCU_GPIO_I2C_SCL    RCU_GPIOD
#define RCU_I2C             RCU_I2C3
#define I2C_SCL_PORT        GPIOD
#define I2C_SDA_PORT        GPIOD
#define I2C_SCL_PIN         GPIO_PIN_12
#define I2C_SDA_PIN         GPIO_PIN_13
#define I2C_GPIO_AF         GPIO_AF_4

typedef enum {
    I2C_START = 0,
    I2C_SEND_ADDRESS,
    I2C_RESTART,
    I2C_TRANSMIT_DATA,
    I2C_RELOAD,
    I2C_STOP,
    I2C_END
} i2c_process_enum;

/* function declarations */
/* configure the GPIO ports */
void i2c_gpio_config(void);
/* configure the I2C interface */
void i2c_config(void);
/* reset I2C gpio configure */
void i2c_gpio_reset(void);
/* reset i2c bus */
void i2c_bus_reset(void);

void i2c_write_bytes(uint16_t DeviceAddr, uint8_t* p_buffer, uint16_t number_of_byte);
void i2c_read_bytes(uint16_t DeviceAddr, uint8_t* p_buffer, uint16_t number_of_byte);

void iic_buffer_write(uint16_t DeviceAddr, uint8_t* p_buffer, uint8_t write_address, uint8_t number_of_byte);
void i2c_buffer_read(uint16_t DeviceAddr, uint8_t* p_buffer, uint8_t read_address, uint16_t number_of_byte);
#endif /* I2C_H */
